We are meeting a kind of LED light new material for Warm light

As we all know, LED (light emitting diode) lights energy efficient and longer life expectancy, but due to the current LED high bay lights with light blue Designed based, which has hindered its indoor lighting field spread.
     Today, the University of Georgia scientists have developed is said to be the world's first use of a single fluorescent powder and a single light-emitting unit warm white LED lights. For this material details of the papers published in "Nature" Publishing Group, the latest issue of "Light Science and Applications" journal.

      Author of the paper, University of Georgia professor Pan Zhengwei (sound), said: "At present, the white LED high bay lights is mainly used in flash and auto headlamps, but they emit blue luminescence is not liked, especially in the field of interior lighting our material reaches warm, while for realistic color reproduction. previously using a single fluorescent powder improved LED lights failed to achieve this effect. "

Pan Zhengwei said that the measure of artificial light quality has two main targets. Correlated Color Temperature is a measure of light heating. For indoor lighting, the color temperature is lower than 4000K (Kelvin) is ideal, but correlated color temperature higher than 5000K, the light emitting device emits white LED as light blue luminescence. Another important indicator is the color reproduction, namely light simulating natural light capabilities. Reduction degree of 80 or more for interior lighting is ideal, below this value the color will look distorted.

Pan Zhengwei and his colleagues developed the material to meet these two conditions, correlated color temperature was controlled at 4000K or less, while color reproduction up to 85.

Pan Zhengwei said, giving the blue LED chip outer painted a different color phosphors can emit warm white light, so will be able to make to the phosphor-based white LED high bay lights.  However, these raw materials in accordance with the precise percentage ratio up laborious and expensive, and ultimately produce a light color will be different, because each raw material to temperature change reactions are not the same.

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